--  @testpoint:opengauss关键字reloptions(非保留)，作为函数名

--关键字不带引号-成功
drop function if exists reloptions;
create function reloptions(i integer)
returns integer
as $$
begin
    return i+1;
end;
$$ language plpgsql;
/
drop function reloptions;
--关键字带双引号-成功
drop function if exists "reloptions";
create function "reloptions"(i integer)
returns integer
as $$
begin
    return i+1;
end;
$$ language plpgsql;
/
drop function "reloptions";
--关键字带单引号-合理报错
drop function if exists 'reloptions';
create function 'reloptions'(i integer)
returns integer
as $$
begin
    return i+1;
end;
$$ language plpgsql;
/
--关键字带反引号-合理报错
drop function if exists `reloptions`;
create function `reloptions`(i integer)
returns integer
as $$
begin
    return i+1;
end;
$$ language plpgsql;
/